Repository logo

Infoscience

  • English
  • French
Log In
Logo EPFL, École polytechnique fédérale de Lausanne

Infoscience

  • English
  • French
Log In
  1. Home
  2. Academic and Research Output
  3. Journal articles
  4. Simple predictive electron transport models applied to sawtoothing plasmas
 
research article

Simple predictive electron transport models applied to sawtoothing plasmas

Kim, D
•
Merle, A
•
Sauter, O
Show more
2016
Plasma Physics and Controlled Fusion

In this work, we introduce two simple transport models to evaluate the time evolution of electron temperature and density profiles during sawtooth cycles (i.e. over a sawtooth period time-scale). Since the aim of these simulations is to estimate reliable profiles within a short calculation time, two simplified ad-hoc models have been developed. The goal for these models is to rely on a few easy-to-check free parameters, such as the confinement time scaling factor and the profiles' averaged scale-lengths. Due to the simplicity and short calculation time of the models, it is expected that these models can also be applied to real-time transport simulations. We show that it works well for Ohmic and EC heated L- and H-mode plasmas. The differences between these models are discussed and we show that their predictive capabilities are similar. Thus only one model is used to reproduce with simulations the results of sawtooth control experiments on the TCV tokamak. For the sawtooth pacing, the calculated time delays between the EC power off and sawtooth crash time agree well with the experimental results. The map of possible locking range is also well reproduced by the simulation.

  • Details
  • Metrics
Type
research article
DOI
10.1088/0741-3335/58/5/055002
Web of Science ID

WOS:000375232300010

Author(s)
Kim, D
Merle, A
Sauter, O
Goodman, T P
Date Issued

2016

Publisher

Plasma Physics and Controled Fusion

Published in
Plasma Physics and Controlled Fusion
Volume

58

Issue

5

Article Number

055002

Subjects

TCV

•

transport modelling

•

predictive simulation

•

electron heat diffusivity

•

profile stiffness

•

sawtooth pacing

•

sawtooth locking

URL

URL

https://crpplocal.epfl.ch/pinboard/jpapers/1503013.pdf
Editorial or Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
SPC  
Available on Infoscience
March 18, 2016
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/125059
Logo EPFL, École polytechnique fédérale de Lausanne
  • Contact
  • infoscience@epfl.ch

  • Follow us on Facebook
  • Follow us on Instagram
  • Follow us on LinkedIn
  • Follow us on X
  • Follow us on Youtube
AccessibilityLegal noticePrivacy policyCookie settingsEnd User AgreementGet helpFeedback

Infoscience is a service managed and provided by the Library and IT Services of EPFL. © EPFL, tous droits réservés